.main {
    .category_list {
        width: 90px;
        height: 100%;
        position: relative;
        text-align: center;
        float: left;
        li {
            background-color: pink;
            height: 50px;
            line-height: 50px;
            border-right: 1px solid red;
            border-bottom: 1px solid red;
            &.active {
                background-color: #fff;
                border-right: 1px solid #fff;
            }
            a {
                display: block;
                height: 100%;
            }
        }
    }
    .brand_list {
        height: 100%;
        overflow: hidden;
        position: relative;
        li {
            width: 33.3%;
            float: left;
            text-align: center;
            a {
                display: block;
            }
            img {
                width: 62px;
                height: 62px;
                margin: 0 auto;
            }
        }
    }
}